JPH0542318B2 - - Google Patents
Info
- Publication number
- JPH0542318B2 JPH0542318B2 JP62149812A JP14981287A JPH0542318B2 JP H0542318 B2 JPH0542318 B2 JP H0542318B2 JP 62149812 A JP62149812 A JP 62149812A JP 14981287 A JP14981287 A JP 14981287A JP H0542318 B2 JPH0542318 B2 JP H0542318B2
- Authority
- JP
- Japan
- Prior art keywords
- ion exchange
- filter
- ion
- water
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005342 ion exchange Methods 0.000 claims description 58
- 239000000463 material Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920002492 poly(sulfone) Polymers 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000941 radioactive substance Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 7
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 150000002500 ions Chemical group 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012857 radioactive material Substances 0.000 description 4
- 238000011001 backwashing Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005115 demineralization Methods 0.000 description 2
- 230000002328 demineralizing effect Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
【発明の詳細な説明】
(イ) 発明の目的
［産業上の利用分野］
この発明は原子力発電所の原子炉冷却材、復水
の浄化、火力プラントの復水浄化、一般廃液の処
理等の水処理に使用するイオン交換性フイルタに
関するものである。[Detailed description of the invention] (a) Purpose of the invention [Field of industrial application] This invention is applicable to reactor coolants in nuclear power plants, purification of condensate, purification of condensate in thermal power plants, treatment of general waste liquid, etc. This invention relates to ion exchange filters used in water treatment.
［従来の技術］
例えば原子力発電所の冷却材中にはイオン状の
放射性物質と、粒子状の放射性物質が存在してい
るが、放射線の被曝低減化を図るためには、原子
炉冷却材中のイオン状及び粒子状の放射性物質を
除去する必要がある。[Prior art] For example, the coolant of nuclear power plants contains ionic radioactive substances and particulate radioactive substances, but in order to reduce radiation exposure, it is necessary to It is necessary to remove ionic and particulate radioactive substances.
しかるに、従来の精密濾過フイルタを使用して
も、粒子状の放射性物質の捕捉は可能であるが、
イオン領域の放射性物質を捕捉することは困難で
ある。一方、従来のイオン交換樹脂塔はイオン領
域の放射性物質を捕捉することは可能であるが、
粒子領域の放射性物質は良好に捕捉することがで
きない。 However, although it is possible to capture particulate radioactive materials using conventional microfiltration filters,
It is difficult to capture radioactive materials in the ionic region. On the other hand, conventional ion exchange resin towers can capture radioactive substances in the ionic region, but
Radioactive substances in the particle region cannot be captured well.
このために従来は、原子力発電所の水処理装置
においては、イオン状の放射性物質を捕捉するた
めのイオン交換樹脂塔と粒子状の放射性物質を捕
捉するための濾過フイルタの両方を組合せたシス
テムとなつている。 To this end, water treatment equipment at nuclear power plants has conventionally used a system that combines both an ion exchange resin tower to capture ionic radioactive materials and a filtration filter to capture particulate radioactive materials. It's summery.
［発明が解決しようとする問題点］
しかるに、このように、濾過フイルタとイオン
交換樹脂塔の両方を備えた処理システムは設置の
ために大きな空間を必要とし、構造が複雑とな
り、運転員の労力を多く要し、設備費も高価にな
る。[Problems to be Solved by the Invention] However, as described above, a treatment system equipped with both a filtration filter and an ion exchange resin tower requires a large space for installation, has a complicated structure, and requires a lot of labor from the operator. It takes a lot of time and equipment costs are also high.
この発明は上記の如き事情に鑑みてなされたも
のであつて、濾過フイルタの機能とイオン交換樹
脂塔の機能を兼備し、イオン領域から粒子領域ま
で広い領域の放射性物質の分離に適用することが
でき、構造が簡単で小型化が可能であり、設置の
ために大きな空間を必要とせず、運転員の省力化
及び設備費の低減化を計ることができるイオン交
換性フイルタを提供することを目的とするもので
ある。 This invention was made in view of the above-mentioned circumstances, and has the functions of a filtration filter and an ion exchange resin tower, and can be applied to the separation of radioactive substances in a wide range from the ion region to the particle region. The purpose of the present invention is to provide an ion exchange filter that has a simple structure, can be made compact, does not require a large space for installation, and can save labor for operators and reduce equipment costs. That is.
(ロ) 発明の構成
［問題を解決するための手段］
この目的に対応して、この発明のイオン交換性
フイルタは、通水性を有する材料からなる筒体の
外側若しくは内側にポリスチレン系、ポリエチレ
ン系、ポリプロピレン系、ポリアクリロニトリル
系及びポリサルホン系のうち少なくとも１つの系
の合成樹脂を基材として糸径が0.1〜300μｍのイ
オン交換糸からなる繊維状のイオン交換体を巻い
てなることを特徴としている。(b) Structure of the Invention [Means for Solving the Problem] In response to this purpose, the ion exchange filter of the present invention has a cylindrical body made of a water-permeable material, and a polystyrene-based or polyethylene-based , polypropylene-based, polyacrylonitrile-based, and polysulfone-based synthetic resin as a base material, and a fibrous ion exchanger made of ion exchange thread with a thread diameter of 0.1 to 300 μm is wound. .
以下、この発明の詳細を一実施例を示す図面に
ついて説明する。 Hereinafter, details of the present invention will be explained with reference to the drawings showing one embodiment.
第１図において２はイオン交換性フイルタ塔で
ある。イオン交換性フイルタ塔２は上端開放の容
器３を有し、容器３の上端開放部は上蓋４で閉じ
られている。また、容器３には入口管５及び出口
管６が接続している。容器３内には複数のイオン
交換性フイルタ１が配設されている。イオン交換
性フイルタ１は第２図及び第３図に示すように、
中心部に支持管７が位置する。支持管７は壁が通
水可能な多孔質をなしている。このような支持管
７は例えばステンレス鋼製の金網を筒状に丸めて
形成することができる。支持管７の周囲にイオン
交換系８が巻かれている。イオン交換糸８はイオ
ン交換樹脂やイオン交換セルロース等のイオン交
換体を糸状に形成したものであり、イオン交換樹
脂の場合は母体合成樹脂に酸性水酸基、カルボキ
シル基、スルホ基などのような酸性基が結合して
いる高分子酸からなる陽イオン交換樹脂や母体合
成樹脂にアミノ基やイミノ基のような塩基性基が
結合している高分子塩基からなる陰イオン交換樹
脂で構成することができるが、そのうちでも、ポ
リスチレン系、ポリエチレン、ポリプロピレン、
ポリアクリロニトリル、ポリサルホン等の合成樹
脂を基材としたものが良好である。イオン交換糸
８の糸径は0.1〜300μｍである。 In FIG. 1, 2 is an ion exchange filter tower. The ion exchange filter tower 2 has a container 3 with an open top, and the open top of the container 3 is closed with a top lid 4. Further, an inlet pipe 5 and an outlet pipe 6 are connected to the container 3. A plurality of ion exchange filters 1 are arranged within the container 3. As shown in FIGS. 2 and 3, the ion exchange filter 1 has
A support tube 7 is located in the center. The support tube 7 has a porous wall that allows water to pass therethrough. Such a support tube 7 can be formed by rolling a wire mesh made of stainless steel into a cylindrical shape, for example. An ion exchange system 8 is wound around the support tube 7. The ion exchange thread 8 is made by forming an ion exchange material such as an ion exchange resin or an ion exchange cellulose into a thread shape, and in the case of an ion exchange resin, the base synthetic resin has an acidic group such as an acidic hydroxyl group, a carboxyl group, or a sulfo group. It can be composed of a cation exchange resin made of a polymeric acid to which is bonded, or an anion exchange resin made of a polymer base to which a basic group such as an amino group or imino group is bonded to a base synthetic resin. However, among these, polystyrene, polyethylene, polypropylene,
Those based on synthetic resins such as polyacrylonitrile and polysulfone are good. The diameter of the ion exchange thread 8 is 0.1 to 300 μm.
イオン交換糸は１種類でもよいが、イオン交換
性フイルタ１の半径方向の位置によつて糸径の異
なる複数種類のイオン交換糸８を用いてもよい。
また、イオン交換糸８は布状に織つた後に支持管
７の外側に巻いてもよい。 One type of ion exchange thread may be used, but multiple types of ion exchange threads 8 may be used, each having a different thread diameter depending on the position in the radial direction of the ion exchange filter 1.
Further, the ion exchange thread 8 may be woven into a cloth and then wound around the outside of the support tube 7.
イオン交換性フイルタ１の上端は中央部に凹部
１１をもつ上部止め板１２によつて閉じられてお
り、また、イオン交換性フイルタ１の下端は環板
状の下部止め板１３が支持管７の下端部に取付け
られていて巻いたイオン交換糸８の束の下端部を
閉じている。但し、支持管７の下端部は下部止め
板１３の下方に突出している。 The upper end of the ion exchange filter 1 is closed by an upper stop plate 12 having a recess 11 in the center, and the lower end of the ion exchange filter 1 is closed by an annular lower stop plate 13 that is connected to the support tube 7. It is attached to the lower end and closes the lower end of the bundle of wound ion exchange threads 8. However, the lower end of the support tube 7 protrudes below the lower stop plate 13.
容器３の内容の下端近傍には支持板１４が設け
られており、イオン交換性フイルタ１の支持管７
の下端が、支持板１４の孔１５に差し込まれて支
持されている。 A support plate 14 is provided near the lower end of the contents of the container 3, and supports the support tube 7 of the ion exchange filter 1.
The lower end of the support plate 14 is inserted into the hole 15 and supported.
イオン交換性フイルタ１の上端部はスプリング
１６を介して上蓋４の内側面に支持されている。 The upper end of the ion exchange filter 1 is supported on the inner surface of the upper lid 4 via a spring 16.
また、水等によりフイルタ塔出口管６側からイ
オン交換系８へ逆洗する場合、イオン交換系８の
表面に付着した粒子を除去排出させるためのドレ
ン管２５を設けている。 Further, when backwashing the ion exchange system 8 from the filter tower outlet pipe 6 side with water or the like, a drain pipe 25 is provided for removing and discharging particles adhering to the surface of the ion exchange system 8.
［作用］
このような構成のイオン交換性フイルタ塔にお
いては、被処理水の流路は、入口管５と出口管６
との間に形成され、処理前の被処理水２１は、入
口管５から容器３内に入り、次にイオン交換フイ
ルタ１を半径方向に通過して支持管７に入る。こ
の間処理前の被処理水２１に含まれる粒子領域の
放射性物質はイオン交換糸８の束で濾過され、か
つイオン領域の放射性物質はイオン交換糸の８イ
オン交換能力により捕捉される。[Function] In the ion exchange filter tower having such a configuration, the flow path of the water to be treated is connected to the inlet pipe 5 and the outlet pipe 6.
The untreated water 21 enters the container 3 from the inlet pipe 5 and then passes through the ion exchange filter 1 in the radial direction and enters the support pipe 7. During this time, the radioactive substances in the particle region contained in the water 21 to be treated before treatment are filtered by the bundle of ion exchange threads 8, and the radioactive substances in the ion region are captured by the ion exchange capacity of the ion exchange threads.
処理後の被処理水２２は出口管６から排出され
る。 The treated water 22 after treatment is discharged from the outlet pipe 6.
(ハ) 発明の効果
この発明のイオン交換性フイルタでは、イオン
交換糸の束が濾過機能とイオン交換機能を兼備
し、イオン領域から粒子領域まで幅広い範囲で放
射性物質等の不純物を捕捉することができるた
め、従来のように、フイルタと脱塩塔の両方を使
用する必要がなく、設備用の空間を削減し、コス
トを低減させることができる。また、この発明の
イオン交換性フイルタでは被処理水中の陽イオン
物質濃度と陰イオン物質濃度の比等により、陽イ
オン交換糸と陰イオン交換糸とを交互に巻くこと
ができるので、性能の調整も容易である。また、
イオン交換性フイルタの外層側のイオン交換糸の
径を内層部より細くすることにより、被処理液中
の粒子が外層表面にのみ付着、濾過されるので、
イオン交換性フイルタの厚さ方向の内層部全体を
有効に利用してイオン状クラツドを除去すること
ができる。定期的にイオン交換性フイルタ出口管
６側からイオン交換性フイルタエレメントである
イオン交換糸８側に水または、水−ガス混合体等
を逆流洗浄することにより、このエレメント外層
表面付着の粒子を除去し、ドレン管２５により外
部に排出することができるために、目詰まりによ
る寿命低下はなくなり、イオン交換性フイルタの
寿命を永くすることができる。(C) Effects of the Invention In the ion exchange filter of the present invention, the bundle of ion exchange threads has both a filtering function and an ion exchange function, and is capable of capturing impurities such as radioactive substances in a wide range from the ion region to the particle region. Therefore, it is not necessary to use both a filter and a demineralization tower as in the past, and space for equipment can be reduced and costs can be reduced. Furthermore, in the ion exchange filter of the present invention, cation exchange threads and anion exchange threads can be wound alternately depending on the ratio of cation substance concentration to anion substance concentration in the water to be treated, so performance can be adjusted. is also easy. Also,
By making the diameter of the ion exchange threads on the outer layer side of the ion exchange filter smaller than on the inner layer part, particles in the liquid to be treated are attached and filtered only to the surface of the outer layer.
Ionic crud can be removed by effectively utilizing the entire inner layer in the thickness direction of the ion exchange filter. Particles adhering to the outer layer surface of this element are removed by periodically backwashing water or a water-gas mixture from the ion exchange filter outlet pipe 6 side to the ion exchange thread 8 side, which is the ion exchange filter element. However, since it can be discharged to the outside through the drain pipe 25, the life of the ion exchange filter is not shortened due to clogging, and the life of the ion exchange filter can be extended.
更に、イオン交換糸を補強糸を束ねて巻くこと
により、イオン交換性フイルタ自体の強度を高め
ることができる。 Furthermore, the strength of the ion exchange filter itself can be increased by winding the ion exchange yarn with reinforcing yarn bundled together.
イオン交換性能は、イオン交換材の接液面積が
大きいほど高くなる。従来の脱塩塔樹脂径は約
500μｍ程度である。この発明のイオン交換糸を
使用したイオン交換性フイルタは、0.1〜300μｍ
径の糸として密に巻いているため、イオン交換材
の単位体当たりの接液面積は従来の脱塩塔よりも
大きくなり、イオン交換性能を高めることができ
る。また、被処理液の線速度は脱塩塔の線速度
（約100ｍ／hr以下）よりも大きな線速度（約100
〜約200ｍ／hr）とすることがてきるので、大容
量の処理ができ、コンパクトの設計ができる。 Ion exchange performance increases as the contact area of the ion exchange material increases. Conventional desalination tower resin diameter is approx.
It is about 500 μm. The ion exchange filter using the ion exchange thread of this invention has a diameter of 0.1 to 300 μm.
Since the ion exchange material is tightly wound as a diameter thread, the area in contact with the liquid per unit of ion exchange material is larger than that of a conventional desalination tower, and ion exchange performance can be improved. In addition, the linear velocity of the liquid to be treated is higher than the linear velocity of the demineralization tower (approximately 100 m/hr or less).
~200m/hr), allowing for large-capacity treatment and a compact design.
第１図はこの発明の一実施例に係わるイオン交
換性フイルタを使用したイオン交換性フイルタ塔
を示す縦断面説明図、第２図はこの発明の一実施
例に係わるイオン交換性フイルタを示す縦断面説
明図、及び第３図は第２図における−部断面
図である。
１……イオン交換性フイルタ、２……イオン交
換性フイルタ塔、３……容器、４……上蓋、５…
…入口管、６……出口管、７……支持管、８……
イオン交換糸、１３……下部止め板、１４……支
持板、１５……孔、２１……処理前の被処理水、
２２……処理後の被処理水、２５……逆洗時フイ
ルタ付着粒子除去排出用ドレン管。
FIG. 1 is a longitudinal cross-sectional explanatory diagram showing an ion-exchange filter tower using an ion-exchange filter according to an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing an ion-exchange filter according to an embodiment of the present invention. The plane explanatory drawing and FIG. 3 are cross-sectional views taken along the line - in FIG. 2. DESCRIPTION OF SYMBOLS 1... Ion exchange filter, 2... Ion exchange filter tower, 3... Container, 4... Upper lid, 5...
...Inlet pipe, 6...Outlet pipe, 7...Support pipe, 8...
Ion exchange thread, 13... Lower stop plate, 14... Support plate, 15... Hole, 21... Water to be treated before treatment,
22...Water to be treated after treatment, 25...Drain pipe for removing particles adhering to the filter during backwashing.
Claims (1)
くは内側にポリスチレン系、ポリエチレン系、ポ
リプロピレン系、ポリアクリロニトリル系及びポ
リサルホン系のうちの少なくとも１つの系の合成
樹脂を基材として糸径が0.1〜300μｍのイオン交
換糸からなる繊維状のイオン交換体を巻いてなる
ことを特徴とするイオン交換性フイルタ。1 The outside or inside of the cylinder made of a water-permeable material is made of a synthetic resin of at least one of polystyrene, polyethylene, polypropylene, polyacrylonitrile, and polysulfone, and has a thread diameter of 0.1 to 300 μm. An ion exchange filter characterized in that it is made by winding a fibrous ion exchanger made of ion exchange threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62149812A JPS63315109A (en) | 1987-06-16 | 1987-06-16 | Ion exchangeable filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62149812A JPS63315109A (en) | 1987-06-16 | 1987-06-16 | Ion exchangeable filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63315109A JPS63315109A (en) | 1988-12-22 |
| JPH0542318B2 true JPH0542318B2 (en) | 1993-06-28 |
Family
ID=15483248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62149812A Granted JPS63315109A (en) | 1987-06-16 | 1987-06-16 | Ion exchangeable filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63315109A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009034646A (en) * | 2007-08-03 | 2009-02-19 | Kurita Water Ind Ltd | Bobbin-type filter and water treatment method |
| JP5131756B2 (en) * | 2008-03-13 | 2013-01-30 | 栗田工業株式会社 | Pincushion filter and water treatment method |
| JP2010158606A (en) * | 2009-01-06 | 2010-07-22 | Kurita Water Ind Ltd | Filter, method of manufacturing the same, and method of treating fluid |
| US10662083B2 (en) * | 2017-02-28 | 2020-05-26 | Toray Industries | Filter |
| KR102350760B1 (en) * | 2021-05-25 | 2022-01-14 | (주)케이엠에스 | Foreign matter filtering apparatus with improved stability and management system thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241581B2 (en) * | 1973-02-09 | 1977-10-19 | ||
| JPS5335942B2 (en) * | 1974-02-26 | 1978-09-29 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241581U (en) * | 1975-09-18 | 1977-03-24 | ||
| JPS5335942U (en) * | 1976-09-01 | 1978-03-29 | ||
| JPS6074789U (en) * | 1983-10-31 | 1985-05-25 | 東レエンジニアリング株式会社 | filtration tank |
| JPS6164306U (en) * | 1984-10-04 | 1986-05-01 |
-
1987
- 1987-06-16 JP JP62149812A patent/JPS63315109A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241581B2 (en) * | 1973-02-09 | 1977-10-19 | ||
| JPS5335942B2 (en) * | 1974-02-26 | 1978-09-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63315109A (en) | 1988-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3529431B2 (en) | Improved filter and method for separating charged particles from a liquid stream | |
| EP0876198B1 (en) | Method and device for removing iron from aqueous liquids | |
| EP0326359B1 (en) | Precoat filter element | |
| JPH0542318B2 (en) | ||
| GB2015890A (en) | Filter Element and Liquid Purification Method | |
| US4780213A (en) | Filter media and method of filtration | |
| US5552056A (en) | Filter element having an ion exchange yarn winding layer | |
| JP2001239138A (en) | Device for treating liquid | |
| JPH0353999B2 (en) | ||
| JPH0356126A (en) | Hollow yarn membrane filter having desalting function | |
| JP3324456B2 (en) | How to remove iron cladding | |
| JPH07328334A (en) | Composite filtering body | |
| JP4272779B2 (en) | Cartridge type filtration device used in condensate system of power plant and operation method of condensate filtration using the same | |
| JP2892811B2 (en) | Ion exchange resin, condensate desalination tower and condensate purification device using this resin | |
| JPH0437621Y2 (en) | ||
| JPH1099621A (en) | Precoating of filter | |
| JPH0747242A (en) | Non-aid type filter | |
| JPS63274405A (en) | Reverse washing treatment method of hollow fiber membrane filter apparatus | |
| JPH063442U (en) | Liquid collection structure in packed tower | |
| JP3767765B2 (en) | Condensate treatment method and condensate treatment apparatus | |
| JPH03238083A (en) | Filtering and desalting device | |
| JPH0130524B2 (en) | ||
| JPS6071998A (en) | Filter for boiling-water reactor primary system water | |
| JPH01307490A (en) | Method of recovering backwashing waste water of condensate desalting device | |
| JPS6365910A (en) | Cleaning device using hollow yarn membrane module |